AnandTech posted their review of the iPhone 6s and 6s Plus yesterday. I haven't seen one of their reviews for a while but it always amazes me how much detail they go into, including details and assumptions about the processor design.
This review really shows how much attention Apple pays to the details of processor design and how much having the scale to design and build their own chips has paid off. It also shows how far ahead of every other smartphone manufacturer their hardware is.
In the 1990s people wondered how Microsoft would ever be eclipsed. It really feels like that today with Apple. With the amount of money that Apple has available to develop their future products, how can any competitor keep up, let alone catch up?